The first frost for many is expected tonight as lows drop into the 30s for much of the area
Sussex, Warren , and Hunterdon including all counties of NE PA and NY State,
I believe these will spread SE to include Somerset , Morris , Passaic and Possibly Union County. I notice that temperatures tend to fall much lower than forecast with these radiational cooling scenarios and first frost scenarios. Skies will be clear and winds will be light allowing temperatures to drop and they tend to under do just how cold it gets in these situations
If you don’t get your first frost tonight , expect it later next week :
This is Thursday night with temps 13 degrees below average which would put most of the area around the freezing mark give or take a few degrees. This also just happens to be the day when our storm would be occurring , so IF (and that’s a very big if ) this comes true I would definitely expect some kind of snow Thursday night. These cold temperatures continue through next weekend headed towards Halloween.